When a hero is needed, young Freddy Fly calls out, "Flame On!" to become the hero, Firefly! While on a date with his girlfriend, Myrtle, her grandpa (a retired police hero) is attacked at home by the Black Mask and a couple of his minions. When the Firefly flies in to save the day, Grandpa attempts to reclaim his former glory but, ends up knocked out cold instead. After taking down the Black Mask and his men, Firefly and Myrtle wait for Grandpa to wake up and tell him he saved the day so he can be a hero again.